Re: kern/51729: Frequent network related kernel panics on router

[Hauke Fath <hf%spg.tu-darmstadt.de@localhost>]

The following reply was made to PR kern/51729; it has been noted by GNATS.

From: Hauke Fath <hf%spg.tu-darmstadt.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: kern-bug-people%NetBSD.org@localhost, gnats-admin%NetBSD.org@localhost
Subject: Re: kern/51729: Frequent network related kernel panics on router
Date: Wed, 21 Dec 2016 16:41:52 +0100

 FWIW, attempting a transition to -current is made harder by the fact 
 that the 7_99_50 kerneled secondary issues a flurry of
 
 /netbsd: carpN: incorrect hash from 130.83.X.Y
 
 messages, and panics (this is a DIAGNOSTIC/DEBUG/LOCKDEBUG kernel) 
 during shutdown with
 
 [...]
 igphy3: detached
 wm3: detached
 igphy2: detached
 wm2: detached
 igphy1: detached
 wm1: detached
 igphy0: detached
 carp0: state transition from:^@ MASTER -> to: INIT
 uvm_fault(0xfffffe821ab1d5c0, 0x0, 1) -> e
 fatal page fault in supervisor mode
 trap type 6 code 0 rip ffffffff80421f3a cs 8 rflags 10286 cr2 0 ilevel 8 
 rsp fffffe810f97a5c0
 curlwp 0xfffffe8213734640 pid 899.1 lowest kstack 0xfffffe810f9772c0
 Skipping crash dump on recursive panic
 panic: trap
 cpu2: Begin traceback...
 vpanic() at netbsd:vpanic+0x140
 snprintf() at netbsd:snprintf
 trap() at netbsd:trap+0xb86
 --- trap (number 6) ---
 mutex_tryenter() at netbsd:mutex_tryenter+0xe
 lwp_trylock() at netbsd:lwp_trylock+0x17
 turnstile_block() at netbsd:turnstile_block+0x212
 mutex_vector_enter() at netbsd:mutex_vector_enter+0x29c
 rt_update_wait() at netbsd:rt_update_wait+0x10
 _rt_free() at netbsd:_rt_free+0x11
 rtrequest1() at netbsd:rtrequest1+0x5ef
 rtrequest() at netbsd:rtrequest+0x3e
 carp_setroute() at netbsd:carp_setroute+0xd3
 carp_setrun() at netbsd:carp_setrun+0x56
 carp_carpdev_staate() at netbsd:carp_carpdev_state+0x6c
 if_down() at netbsd:if_down+0x17d
 if_detach() at netbsd:if_detach+0x1d8
 wm_detach() at netbsd:wm_detach+0xc1
 config_detach() at netbsd:config_detach+0xf8
 config_detach_all() at netbsd:config_detach_all+0x97
 cpu_reboot() at netbsd:cpu_reboot+0x175
 sys_reboot() at netbsd:sys_reboot+0x75
 syscall() at netbsd:syscall+0x1df
 --- syscall (number 208) ---
 78696fe3c99a:
 cpu2: End traceback...
 rebooting...